Fine Leather Belt

About 9s 0c on Beta · Horde (17 hours ago) and 9s 0c on Beta · Alliance (19 hours ago), from player scans. A vendor pays 1s 25c, so the auction house pays 6.8× more.

1 recipe: Dark Leather Belt.

No. It is in Classic Era too, with the same item level, vendor price and stack size.

Sell it on the auction house. After the 5% cut a stack of 1 brings about 8s 55c there, against 1s 25c at a vendor.